By Diego Marinho 道 Soroban Dojo Small steps, steady hands · そろばん道場
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Lesson · L3

Mixed Two-Digit Fluency

mixed-operations 18 min child, adult 数 三二
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L3Level
mixed-operationsSkill
18mTime
child/adultAudience
Complements to TenPrerequisite
Best for

Best for guided progression in this stage of practice.

1. Read the core idea 2. Study the worked example 3. Practice the related drills

Core idea

Build calm fluency with two-digit mixed operations before speed becomes the goal.

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Objectives

  • Keep place value steady through more than one operation.
  • Re-read after each move instead of rushing ahead.

Reusable visual engine

Worked visual for Mixed Two-Digit Fluency

Value 32 · 三二

Step 1

32

Step 2

24

Step 3

31

This lesson is about staying organized, not being fast.

Example: 24 + 7 + 1

  1. Start from 24.
  2. Add 7 carefully to reach 31.
  3. Add 1 to reach 32.
  4. Read the whole number after each move.

Practice habit

Pause between steps and confirm the tens and ones rods separately.

Next step

Continue with guided practice

Practice this level Open worksheet Review prerequisite

Use practice mode for immediate repetition, or open worksheets for denser drill sets tied to this level and skill.

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Complements to Ten

Learn the pairs that complete ten so larger transitions feel cleaner.

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First Multiplication Patterns

Start multiplication through repeatable groups, clear roles, and bead movement you can actually follow.

Best next step: continue while the pattern is still clear Open next lesson →

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